Temporal variation of dose rate distribution around the Fukushima Daiichi nuclear power station using unmanned helicopter

被引：32
|
作者：
Sanada, Yukihisa [1 ]
Orita, Tadashi [1 ]
Torii, Tatsuo [2 ]
机构：
[1] Japan Atom Energy Agcy, Sect Fukushima Res & Dev, Fukushima Environm Safety Ctr, Haramachi Ku, 45-169 Sukakejo, Minami Soma 9750036, Japan
[2] Japan Atom Energy Agcy, Collaborat Labs Adv Decommissioning Sci, 2-4 Shirane Shirakata, Tokai, Ibaraki 3191195, Japan
来源：
APPLIED RADIATION AND ISOTOPES | 2016年 / 118卷
关键词：
Unmanned aerial vehicle; Radiation measurement; Fukushima Daiichi nuclear power station; Radioactive cesium; PLANT; SYSTEM;
D O I：
10.1016/j.apradiso.2016.09.008
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Aerial radiological survey using an unmanned aerial vehicle (UAV) was applied to measurement surface contamination around the Fukushima Daiichi nuclear power station (FDNPS). An unmanned helicopter monitoring system (UHMS) was developed to survey the environmental effect of radioactive cesium scattered as a result of the FDNPS accident. The UHMS was used to monitor the area surrounding the FDNPS six times from 2012 to 2015. Quantitative changes in the radioactivity distribution trend were revealed from the results of these monitoring runs. With this information, we found that the actual reduction of dose rate was faster than the one calculated with radiocesium physical half-life. It is indicated that the attenuation effect of radiation by radiocesium penetration in soil is dominant as for reason of reduction of dose rate.
引用
收藏
页码：308 / 316
页数：9
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